CaSiO3—used in partial replacement of silica and whiting in HT bodies, improves thermal shock resistance. In some cases, it is used in place of whiting to eliminate L.O.I. Toxic in inhalation. Source: Clay: A Studio Handbook
Sign up for your FREE subscription to the Ceramic Arts Daily Newsletter and we will give you Plans and Instructions for Making a Wood-fired Kiln and Firing with Wood Free!